DuPont and Steel & Tube Announce Partnership

For over 60 years, New Zealand owned Steel & Tube has been a leading provider of steel solutions, while DuPont is a 214-year-old science-focused company, which among its list of achievements, invented the synthetic building underlay category back in 1978. Together, the two companies form a formidable partnership.

Steel & Tube has proven credibility among roofing contractors, and geographic reach through its 48 branches. DuPont has a proven product range, with recent innovation in roofing products.

"Education and technical support to the architect and contractor are areas we have made a strategic decision to invest in more heavily," says Mark Waterman, National Manager of Steel & Tube Roofing. "DuPont and share our vision and commitment to delivering these services."

To increase support for DuPont Tyvek building envelope products in New Zealand, DuPont has appointed a Technical Manager, who will be based in Auckland. The new technical manager will have access to DuPont’s Global Building Science Resources in North America and Europe.

Paul Henry, Key Account Manager for DuPont Protection Solutions says DuPont has the best system of weather barrier products in the world. "Moisture vapour in buildings is a popular topic in New Zealand at present. Many people are confused on when and if vapour barriers are actually needed on New Zealand buildings. DuPont chemical engineers in North America and Europe have vast research and development experience on this topic. DuPont wants to be involved in this journey," he explains. "We want to give New Zealand better access to our vast research and development resources in Virginia, USA, and Luxembourg, Europe, and felt local DuPont representation was critical to facilitate the use of these resources."

He says there is a lot of confusion about condensation and moisture vapour transmission in NZ. "Most countries around the world have faced similar problems with modern building design," he says. "Increased insulation and the use of superior weather barriers has reduced the number of air changes per hour in buildings. DuPont has assisted countries in Europe, Asia and North America solve these problems over the past 38 years."

Recent High Profile Projects featuring DuPont Tyvek building envelope systems:

Bupa Apollo Retirement Village, Mairangi Bay (DuPont Tyvek HomeWrap Wall Underlay and DuPont Tyvek Contractor Tape)
Bob Scott Retirement Village, Petone (DuPont Tyvek HomeWrap Wall Underlay and DuPont Tyvek Contractor Tape)
Observatory Retirement Village, Oamaru (DuPont Tyvek Supro Roof Underlay)
St Andrews Retirement Village and Care Home, Hamilton (DuPont Tyvek HomeWrap Wall Underlay and DuPont Tyvek Contractor Tape)
St Heliers Town Home Development, St Heliers (DuPont Tyvek HomeWrap Wall Underlay and DuPont Tyvek Contractor Tape, DuPont Flashing Tape for Windows, DuPont Supro Roof Underlay)
Westgate Shopping Mall, West Auckland (DuPont Tyvek HomeWrap Wall Underlay and DuPont Tyvek Contractor Tape)

DuPont FlexWrap NF Flashing Tape

Tyvek

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DuPont FlexWrap NF is a one piece, flexible flashing tape, with an 100% butyl self adhesive.

LBC Red List Free

Homestar / Green Star

For a risk score between 0-20 in accordance with NZBC Acceptable solution E2/AS1
Building Wind Zones up to and including Very High NZS3604:1999, Extra High if used over Rigid Air Barrier
To seal around windows, doors and other wall penetrations as a secondary defence against water penetration
It is compatible with timber and steel framed buildings
It is compatible with most construction materials including concrete, wood, steel and synthetic wall underlays
Can be used in Rigid Air Barrier applications on ply and fibrecement substrates

Extra High Wind Zone

Low Wind Zone

Very High WInd Zone

DuPont FlexWrap NF when installed in accordance with the recommended guidelines will meet or contribute to meet the following provisions of NZBC:

NZBC Clause B2: Durability. Meets the requirement of NZBC B2.3.1 a) 50 years b) 15 years
NZBC Clause E2: External Moisture. Contributes to meet these requirements
NZBC Clause F2: Hazardous Building Materials. Meets this requirement and will not present a health hazard to people

DuPont FlexWrap NF meet the requirements of Acceptable Solution to NZBC E2, and has a CodeMark Product Certification.

Durability

External Moisture

Hazardous Building Materials

CodeMark

DuPont Tyvek HomeWrap Wall Underlay

Tyvek

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DuPont Tyvek HomeWrap is a breathable, fire retardant, synthetic wall underlay.

Cavity:
- All cladding types with both timber and steel framing
- Rigid Air Barriers, (over-sheathed)
Direct fixed:
- With absorbent claddings such as timber, polyymeric cladding, plywood, gypsum fibre cement, brick wood, and stucco plaster on timber framing, or over thermal break on steel framing
- Rigid Air Barriers, (over-sheathed)

All cladding types with both timber and steel framing
Rigid Air Barriers, (over-sheathed)

With absorbent claddings such as timber, polyymeric cladding, plywood, gypsum fibre cement, brick wood, and stucco plaster on timber framing, or over thermal break on steel framing
Rigid Air Barriers, (over-sheathed)

DuPont Tyvek HomeWrap Wall Underlay:

Can be installed in all Wind Zones up to and including Very High, or Extra High if over a rigid air barrier
A non-directional wall underlay meaning the wrap can be installed upside down or inside out and performance will not be compromised
Resistant to most surfactants meaning it is suitable for use behind Cedar Cladding (endorsed by the Western Red Cedar Association)
Can be used in all New Zealand climate zones
Can be used in all seismic and corrosion zones

Corrosion Exposure Zone D

Very High Earthquake Zone

Low Wind Zone

Specific Design Wind Zone

Very High WInd Zone

As per CodeMark Certification, DuPont Tyvek HomeWrap, when installed in accordance with the recommended guidelines will meet or contribute to meet the following provisions of NZBC:

NZBC Clause B2: Durability. Meets the requirement of NZBC B2.3.1 a) 50 years and b) 15 years
NZBC Clause E2: External Moisture. Contributes to meet these requirements
NZBC Clause F2: Hazardous Building Materials. Meets this requirement and will not present a health hazard to people

DuPont Tyvek HomeWrap is an Acceptable Solution to NZBC E2/AS1

Durability

Protection from Fire

External Moisture

Internal Moisture

Hazardous Building Materials

Energy Efficiency

CodeMark

DuPont Tyvek Metal Roof Underlay

Tyvek

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DuPont Tyvek Metal is a breathable, self supporting synthetic roof underlay.

Building wind zones up to and including Extra High.

Recommended for standing seam or low profile roof cladding applications in skillion roof type constructions or any application where extra ventilation is required.

It is recommended for use as a self supporting roof underlay (R2) on roof pitches greater than 3º.

Suitable for the following roof applications:

Direct fixing on all roof cladding types including concrete and clay tiles, profiled metal and pressed metal tiles
Roofs using plywood or other rigid air barrier type solid substrate under the cladding

3°

The use of DuPont Tyvek Metal is considered an alternative solution complying with NZBC Clause E2.

DuPont Tyvek Metal, when installed in accordance with the recommended guidelines will meet or contribute to meet the following provisions of NZBC:

NZBC Clause B2: Durability. Meets the requirement of NZBC B2/AS1 Table 1 (Building Wraps/Roof Underlay).
NZBC Clause E2: External Moisture. Contributes to meet these requirements for use as a roof underlay and air barrier.
NZBC Clause F2: Hazardous Building Materials. Meets this requirement and will not present a health hazard to people according to F2.3.1.

CodeMark

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